Alaska is a hotbed for UFO sightings, abductions and extraterrestrial encounters. Why are these otherworldly visitors drawn to America's last frontier? Shocking new evidence and personal testimony from local witnesses shed light on the alien activity. 　　阿拉斯加是不明飞行物目击、绑架和外星相遇的温床。为什么这些超凡脱俗的游客会被吸引到美国最后的边疆？令人震惊的新证据和当地目击者的个人证词揭示了外星人的活动。